MOSCOW–(BUSINESS WIRE)– SPIRIT DSP, the world’s top voice and video over IP engines provider, announced today that its TeamSpirit® Voice Engine Mobile is enabling HD VoIP calling on the recently launched (July 19) Viber application for Android mobile devices, allowing Viber’s Android users to experience the highest call quality possible. SPIRIT’s Voice Engine Mobile has been powering the extremely popular free Viber application since it first came to market in Dec 2010 for iPhone users.

The Viber application lets iPhone and Android users make free HD (wideband) Viber-to-Viber calls and send messages over 3G and Wi-Fi connections, bypassing the use of any cellular voice minutes. Today, SPIRIT’s Voice Engine Mobile is powering quality Viber-to-Viber free calling to more than 20 million Viber-reported registered users on both Android and iPhone devices, representing a reported call traffic volume of more than one billion minutes of calls per quarter.